Fix Filament Select validation error on grantToUser action (#330)

Add missing getOptionLabelUsing() to the user_id Select field in the
PluginBundleResource grantToUser action. Filament v5 requires this
method alongside getSearchResultsUsing() to validate selected options.

Closes #54

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: simonhamp

app/Filament/Resources/PluginBundleResource.php

@@ -187,6 +187,7 @@ public static function table(Table $table): Table
                                         ->mapWithKeys(fn (User $user) => [$user->id => "{$user->name} ({$user->email})"])
                                         ->toArray();
                                 })
+                                ->getOptionLabelUsing(fn ($value): ?string => User::find($value)?->name)
                                 ->required(),
                         ])
                         ->action(function (PluginBundle $record, array $data): void {

package-lock.json

@@ -0,0 +1,54 @@
+<?php
+
+namespace Tests\Feature\Filament;
+
+use App\Filament\Resources\PluginBundleResource\Pages\ListPluginBundles;
+use App\Models\Plugin;
+use App\Models\PluginBundle;
+use App\Models\User;
+use Filament\Actions\Testing\TestAction;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+use Tests\TestCase;
+
+class GrantBundleToUserActionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    private User $admin;
+
+    private PluginBundle $bundle;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->admin = User::factory()->create(['email' => 'admin@test.com']);
+        config(['filament.users' => ['admin@test.com']]);
+
+        $this->bundle = PluginBundle::factory()->active()->create();
+    }
+
+    public function test_grant_to_user_action_can_be_called_with_user_id(): void
+    {
+        $recipient = User::factory()->create();
+        $plugins = Plugin::factory()->count(2)->approved()->create();
+        $this->bundle->plugins()->attach($plugins->pluck('id'));
+
+        Livewire::actingAs($this->admin)
+            ->test(ListPluginBundles::class)
+            ->callAction(
+                TestAction::make('grantToUser')->table($this->bundle),
+                data: ['user_id' => $recipient->id],
+            )
+            ->assertHasNoFormErrors();
+
+        foreach ($plugins as $plugin) {
+            $this->assertDatabaseHas('plugin_licenses', [
+                'user_id' => $recipient->id,
+                'plugin_id' => $plugin->id,
+                'plugin_bundle_id' => $this->bundle->id,
+            ]);
+        }
+    }
+}